Acoustic measuring instrument



FIG. 1 is a first perspective view of an acoustic measuring instrument showing the new design.

FIG. 2 is a second perspective view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a left side elevational view thereof.

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational thereof. 

CLAIM The ornamental design for a acoustic measuring instrument, as shown. 